Thank for you for taking the time to play and your really kind feedback.
It's a HyperX Cloud III headset! I paid about £65 for it, so it's about as cheap as they come. I did put some reverb on the audio bus in Godot but this is the first time I've recorded audio for a game before, so it was all very experimental. So happy to hear it paid off
Thank you again for playing and your feedback.